Single source with series modifications: New method for preparing modified clay to control harmful algae blooms

doi:10.1016/j.matdes.2023.112077

	Single source with series modifications: New method for preparing modified clay to control harmful algae blooms
	Wang, Mingjiao 1,2; Cao, Xihua1,2 ; Zhang, Bowen 1,2; Mu, Qinglin 3; Song, Xiuxian1,2 ; Yu, Zhiming1,2
	2023-08-01
发表期刊	MATERIALS & DESIGN
ISSN	0264-1275
卷号	232 页码:11
通讯作者	Cao, Xihua(caoxh@qdio.ac.cn)
摘要	Modified clay (MC) is an effective and eco-friendly material that is widely used for controlling harmful algae blooms (HABs). In this study, a new method-single source with series modifications (SSSM)- was optimized for preparing a high-quality MC, and aluminum-rich clay (kaolin) was activated with a multistep treatment that included calcination (Cal), acid etching with alkali neutralization (Al-An), and raw clay supplementation and aging (RSA). The results showed that the removal efficiency of Prorocentrum donghaiense by the SSSM-MC exceeded 85%; Cal, Al-An, and RSA were indispensable processing steps for preparing the best MC with the SSSM method. The changes occurring in the mineral structure and chemical composition of kaolin treated by the different steps were characterized by FTIR, XRD, 27Al-NMR and Al-Ferron. Surface dehydroxylation and disruption of the kaolin lattice after calcination significantly changed the aluminum structure from AlVI to AlV and AlIV. The relatively reactive AlV was readily released from the kaolin lattice with acid etching, and it subsequently reacted with external OH- to generate different polyhydroxyaluminum species because alkali was added during the Al-An step. The acidity of the above complex was further decreased by RSA, greatly increasing the yield of SSSM-MC while assuring the quality. & COPY; 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词	Modified clay HAB control Kaolin activation Algal removal efficiency
DOI	10.1016/j.matdes.2023.112077
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41976145] ; China National Key R&D Program during the 14th Five -Year Plan Period[2022YFC3105204] ; National Key Research and Development Program (Intergovernmental Key Project for International Cooperation in Science and Technology Innovation)[SQ2022YFE010525]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001060274100001
出版者	ELSEVIER SCI LTD
WOS关键词	RED-TIDE ; REMOVAL ; COAGULATION ; KAOLINITE ; ACTIVATION ; MECHANISMS ; ADSORPTION ; SURFACE ; ACID ; ALUM
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/182919
专题	海洋生态与环境科学重点实验室
通讯作者	Cao, Xihua
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Zhejiang Marine Ecol & Environm Monitoring Ctr, Zhoushan 316021, Peoples R China
第一作者单位	海洋生态与环境科学重点实验室
通讯作者单位	海洋生态与环境科学重点实验室
推荐引用方式 GB/T 7714	Wang, Mingjiao,Cao, Xihua,Zhang, Bowen,et al. Single source with series modifications: New method for preparing modified clay to control harmful algae blooms[J]. MATERIALS & DESIGN,2023,232:11.
APA	Wang, Mingjiao,Cao, Xihua,Zhang, Bowen,Mu, Qinglin,Song, Xiuxian,&Yu, Zhiming.(2023).Single source with series modifications: New method for preparing modified clay to control harmful algae blooms.MATERIALS & DESIGN,232,11.
MLA	Wang, Mingjiao,et al."Single source with series modifications: New method for preparing modified clay to control harmful algae blooms".MATERIALS & DESIGN 232(2023):11.